The world press isn't interested, Mugabe isn't white. Ian Smith was demonized for trying to prevent a Marxist take-over, and the resulting horrors are not in the left-wings' playbook. It was supposed to become a black Marxist paradise as the blacks threw the evil white "colonials" out, and not the hell on earth is becoming. So it's a non-story.
With a disarmed citizenry, there's only one solution for the whites - GET OUT! Those that stay will be demonized by the government as the cause of all the starvation. When Stalin's plans for the Soviet Union failed miserably, he'd invent enemies to blame. By accusing "wreckers" of thwarting the plans of the State, Stalin was able to divert attention from the real reasons for the failure of his schemes. The whites, and the oppostion party will be Mugabe's wreckers, as the West pays no attention. History does tend to repeat itself.